5/5 warm-up (Unit 8)

What is the main function of the respiratory system?

• To digest food

• To exchange gases like oxygen and carbon dioxide

• To pump blood

• To produce hormones

Which type of blood cell is primarily responsible for carrying oxygen in the blood?

• White blood cells

• Red blood cells

• Platelets

• Plasma cells

What is the name of the tiny air sacs in the lungs where gas exchange occurs?

• Bronchi

• Alveoli

• Capillaries

• Trachea

What is homeostasis?

• The process of breaking down food

• The maintenance of a stable internal environment

• The movement of muscles

• The production of energy

Tags

NGSS.HS-LS1-3

Explain how the respiratory and circulatory systems work together to deliver oxygen to body cells. Use evidence from what you know about both systems.

• The respiratory system brings in oxygen, which is then absorbed by the digestive system and sent to the brain.

• The respiratory system brings in oxygen, which is transferred to the blood in the lungs. The circulatory system then transports this oxygen-rich blood to body cells.

• The circulatory system creates oxygen, which is then sent to the lungs for use.

• The digestive system and circulatory system work together to deliver oxygen.

A student runs a race and notices their heart rate and breathing rate increase. Using reasoning, explain why both rates increase during exercise.

• The body needs more oxygen and must remove more carbon dioxide, so both systems work harder to meet the increased demand.

• The body is trying to cool down by increasing heart and breathing rates.

• The body is digesting food faster.

• The body is producing more hormones.

If the circulatory system stopped working properly, what would happen to the delivery of nutrients and oxygen to the cells? Use evidence to support your answer.

• Nutrients and oxygen would still reach the cells as usual.

• Nutrients and oxygen would not be delivered efficiently, causing cells to lack what they need to function.

• Only nutrients would be affected, not oxygen.

• Only oxygen would be affected, not nutrients.

Tags

NGSS.MS-LS1-3

Which of the following best describes how homeostasis is maintained by the respiratory and circulatory systems?

• By increasing the amount of food eaten

• By regulating the levels of oxygen and carbon dioxide in the blood

• By producing more red blood cells only

• By stopping the heart

A person is climbing a mountain where the air is thinner. Predict and explain how their respiratory and circulatory systems might respond to maintain homeostasis.

• The systems will slow down to conserve energy.

• The breathing and heart rates will increase to take in more oxygen and deliver it to the cells.

• The systems will stop working.

• The digestive system will work harder.

Tags

NGSS.HS-LS1-3